Mercury contamination in humans and fishes in the municipality of Ayapel, Córdoba, Colombia, 2009
DOI:
https://doi.org/10.17533/udea.rfnsp.1753Keywords:
mercury, fish, hair, AyapelAbstract
Objective: to assess the concentration of total mercury (HgT) in hair samples from inhabitants of the municipality of Ayapel (Córdoba) and in fishes captured in the Ayapel swamp. Methodology: a total amount of 112 hair samples were taken from the inferior occipital area of settlers of the Ayapel swamp who were over 14 years old, and samples of muscle tissue of seven species of fishes were also chosen. These samples were analyzed by means of spectrometry of atomic absorption through cold steam after acid digestion. Surveys on clinical symptoms related to poisoning by mercury were applied after the acceptance of the informed consent. Results: the total amount of mercury present in hair displayed an average of 2.18 ± 1.77 μg/g with values between 0.11 and 12.76 μg/g. The highest value of Hg-T in fishes was identified in the carnivorous species Sorubin cuspicaudus, with an average concentration of 0.74 ± 0,19 µg/g, and the smaller concentration was found on the iliophagous species Prochilodus magdalenae with 0.15±0.02 µg/g of fresh weight. Conclusions: the population studied in Ayapel showed mercury levels above those internationally allowed by the usepa. There were also signs and symptoms related to such mercury levels, which can probably be a consequence of the high consumption of fishes contaminated with mercury.
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